{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Disease", "Chemical"], "input": "The protective role of mangiferin was analyzed by triphenyl tetrazolium chloride ( TTC ) test used for macroscopic enzyme mapping assay of the ischemic myocardium ."}
{"Disease": ["ischemic myocardium"], "Chemical": ["mangiferin", "triphenyl tetrazolium chloride", "TTC"]}